Granted Patent
Utility
US 4,944,788 · App. 07/278,709
Substituted nitro and cyanoguanidines and their use for increasing crop yields
Inventors:
Laurine M. Speltz, Bryant Leonidas Walworth, Alexander D. Pavlista
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Dec 1, 1988
Inventors
Laurine M. Speltz
Bryant Leonidas Walworth
Alexander D. Pavlista
Assignee (at issue)
American Cyanamid Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.